I need to synchronize some information contained in HubSpot with an external database.
I plan to use "Get recently updated and created contacts" from the Contacts API
The results of the API contain all the contact information.
I would like to do the synchronization incrementally: Is it possible with the API to retrieve only the modified information of a contact?
At this time, it's not possible to get only the modified properties of a contact record. Derek responds to a similar query in this topic.
If you're using an OAuth app, you could also leverage the Webhooks API to receive notifications of updates to specific contact properties you're interested in.